Blow-off or mud valve



A ril .15, 1930 HDB'ARR 1,755,145

BLOW-OFF OR MUD VALVE Filed March 17, 1928 War/y 00114745012 fiarr ATTORNEY in Patented Apr; 15, 1930 :snnnnY'noimnnsonfnnnn,ionJncxsomnrssissirrr, 453mm or'fron'r v-m vn 01m;

nuunanntrnsro 3.13. ncoLEunoN Ann Y snow-err on Application filed March17,

This invention relates to blow-off or mud valves and its general objectis to provide a valve of this type that is held firmly on its seat butcan be actuated in an easy and ex- 7 peditious manner by the meremovement of levers, as screw threads and the like that necessitaterotation of the valve stem during the o ening and closing of the usualvalve have een dispensed within the present apmplication. v

A further object of the invention is to provide a. valve of thecharacter referred to that is possessed with a long life, has no seatinggaskets to change or become loose, and the 16888.1) for my type of valvedue to the configuration thereof will revent the accumulation of dirt,scale or oreign matter there- Another object of the invention is toprozo vide a blow-ofi' or mud valve, that is simple 1n construction,inexpensive to manufacture and efiicient in operation and service.

, This invention also consists in certain other ieatures of constructionand in the combina- 2 'tion and arrangement of the several parts, to behereinafter fully described, illustrated in the accompanying drawingsand specifically pointedout in the appended claims. In describing myinvention in detail, referso ence will be had to the accompanying draw-I ings wherein like characters denote like or corresponding partsthroughout the several views, and in which:

Figure 1 is a detail view of my valve with parts in section and sideelevation and also with parts in full and dash lines. I

Figure 2 is a sectional view taken approximately on line 2-2 of Figure1.

Figure 3 is a sectional view taken approximately on line 33 of Figure 1.

Figure 4 is a detail view of the core of my valve.

Referring to the drawings in detail, the reference numeral 1 indicatesthe valve casing that has formed therewith and extending laterallytherefrom a nipple 2 which provides the inlet means for said valve,while the lower end of the casing provides the outlet therefor. Thenipple as well as the lower end of the casing 1s provided with a flaredbore having L.' L."1fOS15 IY, 'onucxsorr, mssrssrrrr mun vALvn' i d 71521s] seriafnaaca sis screw threads andfor distinction the outlet isindicatedby the reference numeral 3. The

upperofthe casing. is provided with a threadedrecess to receive a glandnut 4 which has disposed between the same and the casing proper packing5' that provides a leak proof connection between the casing and the core6 of the valve. l V

The casing date ,the core 6 which is cylindrical in shape and itsseating end whichis indicated by the reference numeral? is tapered asshown, to conform to thetapered seat 8 provided in the casing just belowthe passage of the nipple ,2 as best shown in Figure 1. The bore thatreceives the core6 is slightly larger than the passage 9 beyond the boreso as to provide the seat 8 as will be apparent.

The core as above suggested is mounted for reciprocation in its boreforicontrolling communication between the inlet and outlet 2 and 3respectively, and the means for reciprocatin the core includes a yokev10 that i'sprovide with an opening in its bight portion 11 for theurpose ofaccommodating the threaded shan 12 formed with a squarecornered block 13 that is in turn formed with the uppercnd of the coreas best shown in Figured. l

Thebight portion of the yoke 10 is seated upon the block 13 and the armsof the oke are provided with aperturedears 14 at teir upper endstoreceive a pivot pin 15 which has pivotally secured thereto a lever 16.

Thevlever 16 is providediwith a handle 17 formed therewith and. ispivotally received. by the pin 15 intermediate its ends, while the endof the lever 16, that is opposite the han dle 17,.ispivota1ly secured,between one ofthe ends of a pair of strips 18, while the opposite endsof the stripsare pivotally secured to'the up r end of a bracket 19 whichis bent at rig t angles between its ends and secured to the casing 1through theinstrumentality of a screw bolt 20. By this constructiomlitwill; be apparent that the core is capable 015 being easily andexpeditiously moved to its operative and inoperative positionsiorcontrolling the passa e'beavee'n the inlet and outlet.

In order to fixedly secure the core on its is bored to slidablyaccommoseat, I provide a handle 21 that is formed with a head 22disposed between the top of the core and the bight portion of the yoke10, and this head is provided with a square corned opening of a size tofit the square cornered block 13. Formed in the core is a substantiallyspirally arranged portion 23 of a slot which opens at one'end inalongitudinally disposed portion 24:, the portion 23 extending about thecore for a portion ofits circumference as clearly shown in Figure 4, andarranged for movement in the slot is a stud 25 formed on the inner endof a screw bolt 26 which is threadedly secured in the casing as bestshown in Figure 1.

The stud not only limits the movement of the core in its upwarddirection, but when the I stud is received in the spirally arrangedportion of the slot, it fixedly secures the core on its seat as aboveset forth. The core is rooutlet, a core mounted for reciprocation insald casing and controlling communication between the inlet and outlet,a seat for said core, a yoke secured to said core, a lever pivtated formoving the portions of the slot 7 with respect to the stud'25 throughthe medium of the handle 21.

From the above description and disclosure of the drawings, it will beobvious that I have provided a valve that can be quickly operated,

. operation is necessary to close the valve.

prevent steam from escaping about the core of mdy invention will bereadily apfarent. I e may make sire it to be understood that changes inthe construction and in the combination and arrangement of the severalparts,

. provided that such changes fall within the scope of the appended"claims.

What I claim is: i

1. A valve of the character described com prising a casing, a nippleformed with said casing and bein provided with screw threads, said nippe providing the inlet for the valve, said casing having a passage flaredat its lower end and providing the outlet, 9. core mounted forreciprocation in a bore communicating with the passage and nipple andbeing adapted to control communication be tween the outlet andnipple,means for reciprocating said core, a valve seat for said core, astud guided in a slot formed in said core when the core is rotated forfixedly securing said core on its seat, and means for rotating said coreforlmoving the slot with respect to the stud. 2. A valve of thecharacter described comprising a casing provided with an inlet and

